International DAN (IDAN) is comprised of independent DAN organizations based around the world that provide expert emergency medical and referral services to regional diving communities. These local networks have pledged to uphold DAN's mission and to operate under protocol standards set by the IDAN Headquarters. Each IDAN organization is a nonprofit, independently administered organization. Each DAN depends on the support of local divers to provide its safety and educational services, such as emergency hotlines. In addition, each country has its own rules and regulations regarding insurance. Each regional DAN is cognizant of the insurance regulations of its territory.

DAN DAN serves as the headquarters for IDAN. Regions of coverage include the United States and Canada. Diving Emergencies: +1-919-684-9111 (accepts collect calls)

DAN World Regions of coverage include the Caribbean, Micronesia and Melanesia (except Fiji), Puerto Rico, Guam, Bahamas, British and U.S. Virgin Islands, Central and South America, and any other area not designated below. Diving Emergencies: +1-919-684-9111 (accepts collect calls)

DAN Europe Regions of coverage include geographical Europe, the countries of the Mediterranean Basin, the countries on the shores of the Red Sea, the Middle East including the Persian Gulf, the countries on the shores of the Indian Ocean north of the equator and west of India and Sri Lanka, as well as the related overseas territories, districts and protectorates. Diving Emergencies: +39-06-4211-8685